Bach 1E vs Marcinkiewicz 305
The Marcinkiewicz 305 has a wider cup diameter, the Marcinkiewicz 305 has a larger throat opening.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 1E
• Cornet
Cup depthShallow
vs
Mouthpiece B
Marcinkiewicz 305
• Cornet
Cup depthShallow
Cup Depth
Both mouthpieces share a shallow cup depth, so the sound character from depth alone will be very similar.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.